Super Bowl? This time, Asomugha is serious

In Nnamdi Asomugha’s eight seasons with the Raiders, Oakland went 38-90. (AP)

Nnamdi Asomugha is talking about winning the Super Bowl this season.

And this time, for the first time in his loss-filled, 10-year NFL career, he’s not lying through his teeth.

In his first meeting with the media during training camp, the 49ers cornerback made reference to his lack of team success: Asomugha has never reached the postseason and his teams have compiled a combined record of 50-110.

Asomugha, 32, who hasn’t played in a playoff game since high school, is happily getting used to the good locker-room vibrations.

“It’s definitely a different culture,” Asomugha said. “I think the whole environment is a lot more positive. A lot more upbeat. A lot more optimistic. It’s true optimism. It’s not like all the 32 teams in the league that just come and say ‘We’re going to win the Super Bowl this year.’ It’s coming from a real place. So, I’ve never been around that.”

Asomugha, who signed a one-year contract in April, isn’t the only free agent who was at least partially lured by the 49ers’ success. Of the seven veterans San Francisco signed during the first two months of free agency, only offensive lineman Adam Snyder has experienced a playoff win (with the 49ers in 2011).

Those seven free agents have combined to amass these numbers: 49 seasons, six playoff games, one postseason win.

Safety Craig Dahl, who signed a three-year deal in March, played with the Super-Bowl-champions Giants as a rookie in 2007. However, he tore his ACL during the regular season and did not appear in the playoffs. In his other four NFL seasons, all with the Rams, his teams went 17-46-1.

Dahl was attracted, in part, by the 49ers’ professionalism, which he’s now been able to witness firsthand.

“It’s just a great organization from top to bottom,” Dahl said. “The guys work their tails off and they are so humble in this locker room. They’ve had an extreme amount of success, but every day you have leaders like Pat (Willis), NaVorro (Bowman), Justin (Smith). They are always trying to continue to get better. They never reach a point where they don’t feel like they have to do the little things any more.”

** Here’s a closer look at those seven free agents’ lack of the postseason success:

K PHIL DAWSON

NFL seasons: 14

Appearances in playoff games: 1

Playoff wins: 0

CB NNAMDI ASOMUGHA

NFL seasons: 10

Appearances in playoff games: 0

Playoff wins: 0

OL ADAM SNYDER

NFL seasons: 8

Appearances in playoff games: 2

Playoff wins: 1

S CRAIG DAHL

NFL seasons: 5

Appearances in playoff games: 0

Playoff wins: 0

* Played on Super-Bowl-champion 2007 Giants, but was on injured reserve in postseason.